10+ Larsen & Toubro Limited Devops Engineer Interview Questions and Answers

I would follow the incident management process to identify the root cause and resolve the issue as quickly as possible.

• Notify the relevant stakeholders and initiate the incident management process

• Identify the root cause of the issue and take corrective actions

• Rollback to the previous stable version if necessary

• Communicate the status and progress of the incident to stakeholders

• Conduct a post-incident review to identify areas of improvement

Yes, I have written Docker files from scratch. The syntax for Docker file includes instructions and arguments.

• Docker file is a script that contains instructions to build a Docker image

• The syntax includes instructions like FROM, RUN, COPY, CMD, etc.

• Arguments are used to specify details like the base image, working directory, etc.

• Example: FROM ubuntu:latest RUN apt-get update && apt-get install -y python3

• Example: COPY . /app WORKDIR /app CMD python3 app.py

To give permission to a secret, grant access to the user or application in the secret management tool.

• Access control can be managed through the secret management tool.

• Users or applications can be granted read or write access to a specific secret.

• Access can be granted based on roles or individual permissions.

• Examples of secret management tools include HashiCorp Vault and AWS Secrets Manager.

Docker commands used inside a Dockerfile

• FROM - specifies the base image

• RUN - executes a command in the container

• COPY - copies files from host to container

• WORKDIR - sets the working directory for subsequent commands

• CMD - specifies the command to run when the container starts

The .NET pipeline build process involves several steps including source code management, building, testing, and deployment.

• Source code is managed using a version control system like Git.

• The build process involves compiling the code and creating an executable or library.

• Unit tests are run to ensure the code is functioning correctly.

• The application is deployed to a testing or staging environment for further testing.

• Once testing is complete, the application is deployed to produc...read more

Approval request procedure in pipelines involves manual or automated approval process before deployment.

• Approval request is triggered when a pipeline reaches a certain stage or before deployment.

• The request can be manual or automated depending on the pipeline configuration.

• Manual approval requires a designated person to review and approve the request.

• Automated approval can be based on predefined rules or conditions.

• Approval request procedure ensures that only authorized chang...read more

NuGet is a package manager for .NET that simplifies the process of finding, installing, and using third-party libraries.

• NuGet can be installed using Visual Studio or the NuGet command-line interface (CLI).

• NuGet restore is used to restore the packages listed in a project's packages.config file.

• NuGet packages can be used to add functionality to a project, such as libraries, tools, and frameworks.

• NuGet also allows for the creation and publishing of packages to be shared with oth...read more

My strategy for Kubernetes cluster is to ensure high availability, scalability, and efficient resource utilization.

• Implementing auto-scaling to handle sudden spikes in traffic

• Using Kubernetes' built-in features like horizontal pod autoscaling and cluster autoscaling

• Ensuring proper resource allocation and utilization through resource quotas and limits

• Implementing rolling updates to minimize downtime

• Using Kubernetes' built-in monitoring and logging tools to identify and trouble...read more

Autoscaling in Kubernetes can be achieved through Horizontal Pod Autoscaler (HPA) and Cluster Autoscaler.

• Horizontal Pod Autoscaler (HPA) scales the number of pods based on CPU utilization or custom metrics.

• Cluster Autoscaler scales the number of nodes in the cluster based on resource utilization.

• HPA can be configured using kubectl autoscale command or through YAML file.

• Cluster Autoscaler can be installed as a Kubernetes deployment or as a cluster add-on.

• Both HPA and Cluster A...read more

To run a Docker file, use the 'docker build' command followed by the path to the Dockerfile.

• Navigate to the directory containing the Dockerfile

• Run the command 'docker build -t .'

• The '.' at the end of the command specifies the build context

• Once the build is complete, run the container using 'docker run '